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Latest Redtail surfperch Stories

Clues Captured For Sustainability Of Fish Populations
2012-09-28 10:33:22

Thanks to studies of a fish that gives birth to live young and is not fished commercially, scientists at UC Santa Barbara have discovered that food availability is a critical limiting factor in the health of fish populations. The scientists were able to attach numbers to this idea, based on 16 years of data. They discovered that the availability of enough food can drive up to a 10-fold increase in the per capita birthrate of fish. And, with adequate food, the young are up to 10 times more...


Latest Redtail surfperch Reference Libraries

Redtail Catfish, Phractocephalus hemioliopterus
2009-02-16 20:35:04

The Redtail Catfish (Phractocephalus hemioliopterus) is a species of long-whiskered catfish found in South America. It is native to the Amazon, Orinoco, and Essequibo river basins of South America. It is found only in fresh water. It has been introduced into Florida, although it has not been established there. It is commonly known as cajaro in Venezuela and pirarara in Brazil. It is the only still-living member of the genus Phractocephalus. Despite growing to a large size, it is a popular...

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Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.